$100 bill
I was at the drugstore and noticed a young male cashier staring at the pretty girl in front of me. Her total came to $16.42, and after handing over a $100 bill, she waited for change.
"Here you go," said the cashier, smiling as he returned the proper amount. "Have a great day!"
Now I placed my items on the counter. The tally was $32.79, and I too gave the cashier a $100 bill.
"I'm sorry, Ma'am. We can't accept anything larger than a fifty," he told me, pointing to a sign stating store policy.
"But you just accepted that last girl's hundred," I reasoned.
"I had to," he said. "It had her phone number on it."